Brief Introduction
Just as its name implies, high frequency is that the frequency is relatively high, generally
Refers to the frequency of >=300 MHz (i.e. Wave length <=1m), that is, the usual radio
Frequency band. the electromagnetic wave of frequency >=1GHz is named microwave.
Typical frequencies for wireless applications:
* Current: 0.9GHz - 2GHz
* 3G systems: 2.5GHz
* Bluetooth: 2.5GHz
* GPS: 12.6GHz
* LMDS: 24GHz and 40GHz
* Automotive: 77GHz
Market: RFID, Wireless communications, base station and antenna, amplifier, military products,
Consumer electronics.  
High frequency printed circuit board or microwave PCB refers to the printed circuit board made
on the high frequency (microwave) substrate copper clad plate. the common types are: Double
-sided board, multilayer board and mixed structure.
Mixed structure includes high performance special substrate, PP sheet + ordinary performance
Board and PP sheet mixed pressing board; high frequency substrate + ordinary FR4 substrate;
High frequency substrate + metal base etc.


PCB Case: High Frequency PCB on 10 mil RO4350B
with Immersion Gold for Radar Detector
(Printed circuit boards are custom-made products, the picture and parameters shown are
Just for reference)


General description
this is a type of high frequency PCB built on 10mil (0.254mm) RO4350B substrate with
Tg 280C for the application of Radar Detector. It's double sided board at 0.30 mm thick,
White silkscreen on green solder mask covering both sides and immersion gold is on pad
for soldering. the base material is from Rogers Corp, entire board supplying 1 PCBs per
Panel. They're fabricated per IPC 6012 Class 2 using supplied Gerber data. Each 50 panels
Are packed for shipment. 

Features and benefits
Stable electrical properties verus frequency;
Low thermal coefficient of dielectric constant;
Low in-plane expansion coefficient;
Excellent dimensional stability;
Long storage time, it can be stored for more than 1 year in vacuum bag;
High solderability, no stressing of circuit boards and less contamination of PCB surface;
AOI inspection;
Electrical test and high voltage test;
Team with passion, discipline, responsibility and honesty;
No minimum order quantity. 1 piece is available;
No quality complaint is meant to save money;


Application
UHF radio,Power splitter,Analogue transmitter,Base station antenna


Parameter and data sheet

PCB SIZE	140 x 52mm=1PCS
BOARD TYPE	Double sided PCB
Number of Layers	2 layers
Surface Mount Components	YES
through Hole Components	YES
LAYER STACKUP	Copper ------- 35um(1 oz)+plate TOP layer
	RO4350B 0.254mm
	Copper ------- 35um(1oz) + plate  BOT Layer
TECHNOLOGY
Minimum Trace and Space:	4 mil / 4 mil
Minimum / Maximum Holes:	0.5 mm / 5.0 mm
Number of Different Holes:	11
Number of Drill Holes:	125
Number of Milled Slots:	0
Number of Internal Cutouts:	0
Impedance Control:	no
Number of Gold finger:	0
BOARD MATERIAL
Glass Epoxy:	RO4350B Tg280, er<3.48, Rogers Corp.
Final foil external:	1.5 oz
Final foil internal:	N/A
Final height of PCB:	0.3 mm 0.1mm
PLATING and COATING
Surface Finish	Immersion Gold
Solder Mask Apply to:	Top and Bottom, 12micron Minimum
Solder Mask Color:	Green, PSR-2000GT600D, Taiyo Supplied.
Solder Mask Type:	LPSM
CONTOUR/CUTTING	Routing
MARKING
Side of Component Legend	TOP
Colour of Component Legend	White, IJR-4000 MW300, Taiyo brand
Manufacturer Name or Logo:	Marked on the board in a conductor and leged FREE AREA
VIA	Plated through hole(PTH), minimum size 0.5mm.
FLAMIBILITY RATING	UL 94-V0 Approval MIN.
DIMENSION TOLERANCE
Outline dimension:	0.0059"
Board plating:	0.0029"
Drill tolerance:	0.002"
TEST	100% Electrical Test prior shipment
TYPE of ARTWORK to BE SUPPLIED	Gerber RS-274-X, PCBDOC etc
SERVICE AREA	Worldwide, Globally.

Variety of PCBs

X-ray target shooting